Means for feeding material through rotating cylinders while subjected to roasting, mixing, or similar operations



A. SONSTHAGEN.

MEANS FOR FEEDING MATERIAL THROUGH ROTATING CYLINDERS WHILE SUBJECTED T0 RDASTING;

MIXING, 0R SIMILAR OPERATIONS.

APPLICATION FILED MAR. 4. I920.

Patented Dec. 28, 1920.

frzrerzior: 1753 729271 ,J'onSZka yefi,

STATES ASBJORN SONSTTIAGEN, 0E3 ESSEX, ENGLAND.

MEANS FOR FEEDING MIATERIAL THROUGH ROTATIIIG CYLINDERS WHILE SUBJEC'I'EI) TO ROASTING, MIXING, OE SIMILAR OPERATIONS.

Application filed March 4,

To all whom it may concern Be it known that l, Asnaonn SoNs'ri-ncnw, a subject oi the King of Norway, residing in Essex, England, have invented certain new and useful Improvements in Means for Feeding Material Through Rotating Cylinders ll hile tlubjected to Boasting, Mixing, or similar Operations, of which the "following is a specification.

l. his invention relates to an improved n'ieans for feeding material through a rotating cylinder while subjected to roasting, mixing and similar operations which, while designed primarily for treating powdered or coarse material, may also be employed in any other condition.

According to the present invention the movement of the material is produced by two separate series of vanes one of said series acting to propel the material. while the other checks its advance or alternatively may cause it to move in a direction opposed to the original direction.

According to one term of the invention as applied to roasting, acontinuously re volving cylinder is employed heated enter nally in any convenient manner and within which the powder or other material to be treated is placed.

Projecting inwardly from the interior of the cylinder and preferably arranged upon a helical. line or lines are a number of supports each of which carries a blade or vane so shaped or arranged with respect to the axial line of the cylinder that they have a definite feeding action under which the material is impelled through the cylinder at a predetermined rate of speed. At certain in teri 'als, however other blades are provided the action of which is to move the material in the opposite direction. lhe extent of its backward movement, however, under some of the blades or vanes, just referred to, is less than that produced by the others. By this means while the general effect of the blades or vanes is to cause the material to pass from one end to the other of the machine, it is subjected, while so doing, to a forward and backward movement which agitates the material so that the contents of the said cylinder are mixed throughout the treatment.

Instead of providing the cylinder with blades in the manner before described, a shaft, spindle or other revolving body may Specification of Letters Patent.

1920. Serial No. 363,345.

be disposed within the cylinder upon which the blades or vanes are mounted in a manner ich that they act in the manner before de scribed.

The required oscillatory movement of the material may also be secured by applying blades or vanes to the interior oi the drum which blades or vanes are so arranged to move the material forward. posed upon the axial line of the drum is provided with blades or vanes which however act to more the material in the opposite direction. By suitably varying the speed of the drum and the shaft any desired variation of the rate of progression of the material may be obtained.

Again instead oi the arrangement just described the pitch and direction of the blades of both series may be the same, the blades of one series, however, being driven at a differentspeed to those of the other series.

In order that the invention may be the better understood drawings are appended illustrating an embodiment of the invention in which .lfigure l is a longitudinal sectional view. 2 is a section on line A. A. Fig. 1.

Fig. is an end view.

Referring to the accompanying drawings 1 indicates an outer case at the lower portion of which there is provideda gas or other heating device, indicated enerally by 2, and which case is closed at its front and rear ends respectively by the part 3 formed integral with the case and at the other end by the circular plate a bolted or otherwise secured to the end of said case and upon which body there is provided a hopper or chute. through which as will be hereinafter more fully described the material is fed to the drum wherein it is treated. Revolubly mounted within the case 1 is a drum 5 provided at each end with annular members 5 forming part of hollow trunnions 5' whereby it is supported in bearings 6 formed upon the ends of the casing 1 and through which trunnions passes a spindle or shaft 7. The trunnion at one end of the drum is provided with a bevel wheel 5 engaging which is a second bevel wheel 5 mounted upon a shaft 8 driven by means of a belt. not shown, from some suitable source of power. In the example illustrated a coned pulley 9 is employed whereby the speed at which the drum is driven may be readily varied. Se-

A. shaft dis llatcnte-d Dec. 28, 1920.

interior of drum 5 are helical blades or vanes 9 other helical blades or vanes 9 are secured to the shaft 7 the two series of blades forming substantially a worm extending the full length of the drum. 10 indicates the feed hopper whereby the material passes to the drum.

A discharge opening is provided at 11 at the other end of the case, and said opening is preferably provided with a hinged doorl2. 13 indicates a funnel or chimney provided upon the top of the case for the escape of the heated air.

The two series of blades or vanes are driven at different speeds so that the material is moved forward at a quicker rate by one series than by the other whereby its speed of movement is alternatively accelerat-ed and checked. At the same time it has imparted to it a continuous forward movement whereby it is carried through the machine.

Claims:

1. In combination, a substantially closed horizontal cylindrical casing having an inlet hopper communicating with the upper part of its inlet end, and a discharge door at the lower part of its discharge end; a revoluble substantially open-ended drum rotatably mounted in said casing; an axial shaft passing through said drum; a set of helical blades secured to said shaft and free from connection with said drum; a second set of blades secured to said drum and free from connection with said shaft; and means for differentially rotating said shaft and the drum.

2. In combination, a casing having an inlet end, and a discharge end; an openended revoluble drum within the casing; a shaft passing through said drum; a set of helical blades fast on said shaft; a set of helical blades fast on the inner face of said drum; and means for rotating said shaft and drum in different directions.

3. In combination, a container substantially open at both ends; projections in said shaft container; projections on the inner face of said container; means for rotating said container and revolving said first named projections, a casing for said container; and a heater within said casing.

4. In combination, an intermediately imperforate drum having an inlet end and a discharge end; a shaft in said drum; blades on said shaft; blades on the inner face of said drum and staggered with the blades of the first named blades and means for'rotating said shaft and drum.

5. In combination, a casing having an inlet end and a discharge end; an open ended revoluble drum within the casing; a shaft passing through said drum; helical blades on said shaft; helical blades on the inner face of said drum and alternating with the blades of the first named set; and means for rotating said shaft and drum.

6. In combination, a drum having an inlet end and a discharge end; a shaft in said drum; .a set of helical blades fast 011 said shaft; a set of helical blades fast on the inner face of said drum and the blades of the first set having opposite pitch with the blades of the second set; and means for rotating said shaft and drum.

7. In combination, a horizontal casing havingan inlet hopper at its inlet end, and a discharge door at the discharge end; a revoluble drum within the casing; an axial shaft passing through said drum; a set of helical blades fast on said shaft; a set of helical blades fast on the inner face of said drum and alternating with the blades of the first named set, the blades of the first set having different or opposite pitch with the blades of the second set; and means for rotating said shaft and drum.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

ASBJORN SONSTHAGEN.

Witnesses:

EDMUND H. HARBERD, 0. D. MIBLITE. 

